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Is Amprius Technologies (AMPX) Stock Too Expensive Right Now?

Simply Wall St·07/31/2026 11:22:31
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Amprius Technologies stock has delivered a 36.7% return over the past year, yet the current valuation checks and market multiples point to a picture that is not clearly cheap or clearly expensive.

  • Over the last 12 months, Amprius Technologies is up 36.7%, which puts recent enthusiasm for the stock front and center for anyone thinking about valuation today.
  • The key potential support for the valuation is whether Amprius Technologies can turn its technology and commercial progress into sustained revenue and cash generation. A major risk is that ongoing investment needs or weaker than expected demand could keep profitability further out of reach.
  • The company scores 3 out of 6 on Simply Wall St’s valuation checks, which is a mixed picture rather than a clear bargain or clear overvaluation. You can see the breakdown at 3/6 valuation score.

The issue now is whether Amprius Technologies’ current share price already builds in most of the good news that optimistic investors are expecting.

Amprius Technologies delivered 36.7% returns over the last year. See how this stacks up to the rest of the Electrical industry.

Does Amprius Technologies Look Pricey on Sales?

The P/S ratio suits Amprius Technologies because revenue is still a more relevant anchor than earnings while the business is investing heavily.

Amprius Technologies currently trades on a P/S of about 15.1x. That is well above the Electrical industry average of around 2.6x and also above the peer group average of roughly 12.5x. The Simply Wall St model suggests a fair P/S closer to 5.5x for Amprius Technologies, based on its characteristics relative to comparable companies.

This means the share price implies a P/S that is almost three times the modelled fair level, even before comparing it with the wider industry. For you as an investor, that points to a stock where a lot of optimism is already reflected in the revenue multiple, which may leave less room for disappointment if progress is slower than hoped.

On the P/S multiple alone, Amprius Technologies stock screens as overvalued compared with both its fair ratio and sector benchmarks.

NYSE:AMPX P/S Ratio as at Jul 2026
NYSE:AMPX P/S Ratio as at Jul 2026

See what the numbers say about this price — find out in our valuation breakdown.

The Amprius Technologies Narrative: What Would Justify Today's Price?

Simply Wall St Narratives pick up where the Amprius Technologies valuation puzzle leaves off by explaining which assumptions about future growth, margins and earnings would need to hold for the stock to be worth meaningfully more or less than it is today. Each narrative sets out a fair value as a thesis about Amprius Technologies' business that you can revisit over time on the Community page to see how it holds up against new information.

One of the top community narratives on Amprius Technologies: 57% undervalued

"First-mover advantage, validated technology, and policy tailwinds for domestic and friendly-nation battery sourcing position the company to secure long-term supply agreements..."

Read one of the top narratives on Amprius Technologies

Do you think there's more to the story for Amprius Technologies? Head over to our Community to see what others are saying!

The Bottom Line

For Amprius Technologies, the current market multiples point to an overvalued stock that already bakes in a lot of optimism about future execution. The mixed valuation checks suggest there are some strengths, yet not enough to offset how full the revenue multiple looks today. From here, the real swing factor is whether Amprius Technologies can convert its technology story into predictable revenue and cash generation that justifies such a premium. The more confident you are in that shift to commercial scale, the easier it is to accept today’s pricing.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.